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59 lines
1.5 KiB
Markdown
59 lines
1.5 KiB
Markdown
## NOTE
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The below requires norsyr's fix to `decompress-point` in order to work.
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## Working with BTC RPC Library
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```
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:btc-node-hook|command [%credentials 'http://127.0.0.1:18443' 'poopman' 'chAiM31eeJ1MK3y8BC3mR9q2']
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:btc-node-hook|command [%watch %get-block-count]
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:btc-node-hook|action [%get-block-count ~]
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:btc-node-hook|command [%unwatch %get-block-count]
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```
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## btc-address
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**Import lib; optionally set up env**
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```
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=btca -build-file %/lib/btc-address/hoon
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=mnemonic="abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about"
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=bip32 -build-file %/lib/bip32/hoon
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=ecc secp256k1:secp:crypto
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=zpub "zpub6rFR7y4Q2AijBEqTUquhVz398htDFrtymD9xYYfG1m4wAcvPhXNfE3EfH1r1ADqtfSdVCToUG868RvUUkgDKf31mGDtKsAYz2oz2AGutZYs"
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```
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**Test child public key from xpub**
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```
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`@ux`(child-from-xpub:btca zpub 0)
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(child-from-xpub:btca xpub (dec (bex 31)))
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:: should error as index is too high (hardened key range)
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(child-from-xpub:btca zpub (bex 31))
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```
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**Same, with Jose's bip32 library**
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```
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:: get 0 index in non-change account
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`@ux`(compress-point:ecc pub:(derive-public:(derive-public:(from-extended:bip32 zpub) 0) 0))
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```
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## Deprecated: `btc-address` Child Derivations
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**Test xpub parsing**
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```
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(parse-xpub:btca xpub)
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```
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**Test addition and ECC point checking**
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```
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=px (parse-xpub:btca xpub)
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=pubk ?~ px ~ pubk.u.px
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(is-point:btca pubk)
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(pubkey-to-point:btca pubk)
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=index 256
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`@ux`(add (lsh 3 4 (big-endian-brap:btca pubk)) index)
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```
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**Test computing I**
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```
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(bind px |=(px=parsed-xpub:btca (compute-i:btca px 1)))
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```
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